"bug in glibc"

Igor Sysoev igor at sysoev.ru
Sun Mar 31 15:12:55 UTC 2013

On Mar 31, 2013, at 14:33 , Justin Cormack wrote:

> There is a note in src/os/unix/ngx_user.c about a bug in glibc for crypt_r:
>     /* work around the glibc bug */
>     cd.current_salt[0] = ~salt[0];
>     value = crypt_r((char *) key, (char *) salt, &cd);
> I was wondering if anyone knew what the bug was, as I am running on a platform (Musl libc) that has got NGX_HAVE_GNU_CRYPT_R but has a different implementation, in particular has no current_salt field in struct crypt_data (and indeed the man page says you should treat it as opaque except for the initialized field).
> I was wondering exactly what the bug was as then I could write a test for it rather than always including this code; I have not been able to find it in the glibc bug tracker though.

2002-10-29  Daniel Jacobowitz  <drow at mvista.com>

	* crypt/crypt_util.c (__init_des_r): Initialize current_salt
	and current_saltbits.


Igor Sysoev

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